RS Aggarwal Class 6 Math Fourth Chapter Integers Exercise 4F Solution
EXERCISE 4F
Mark (√) against the correct answer in each of the following:
(1) Which of the following is a true statement?
Ans: – 4 < – 3
(2) 2 less than – 3 is
Ans: – 3 – 2
= – 5
(3) 4 more than – 5 is
Ans: 4 – 5
= – 1
(4) 2 less than – 7
Ans: – 7 – 2
= – 9
(5) 7 +
-3
=?
Ans: 7 + 3
= 10
(6) (- 42) + (- 35) =?
Ans: – 42 – 35
= – 77
(7) (- 37) + 6 =?
Ans: – 37 +6
= – 31
(8) 49 + (- 27) =?
Ans: 49 – 27
= 22
(9) The successor of – 18 is
Ans: -18 + 1
= – 17
(10) The predecessor of – 16 is
Ans: – 16 – 1
= – 17
(11) The additive inverse of – 5 is
Ans: 5
(12) – 12 – (- 5) =?
Ans: – 12 + 5
= – 7
(13) 5 – (- 8) =?
Ans: 5 +8
= 13
(14) The sum of two integers is – 25. If one of them is 30 then the other is
Ans: – 25 – 30
= – 55
(15) The sum of integers is 20. If one of them is – 5 then the other is
Ans: 20 – (- 5)
= 25
(16) The sum of two integers is – 13. If one of them is 8 then the other is
Ans: – 13 – 8
= – 21
(17) On subtracting – 8 from 0, we get
Ans: 8
(18) 8 + (- 8) =?
Ans: 8 – 8
= 0.
(19) (- 6) + 4 – (- 3) =?
Ans: – 6 + 4 + 3
= – 6 + 7
= 1
(20) 6 – (- 4) =?
Ans: 6 + 4
= 10
(21) (- 7) + (- 9) + 12 + (- 16) =?
Ans: – 7 – 9 + 12- 16
= 12 – (7 + 9 + 16)
= 12 – 32
= – 20
(22) On subtracting 8 from – 4, we get
Ans: – 4 – 8
= – 12
(23) On subtracting – 9 from – 6, we get
Ans: – 6 – (- 9)
= – 6 + 9
= 3
(24) On subtracting – 5 from 10, we get
Ans: 10 – (- 5)
= 10 + 5
= 15
(25) (- 6) x 9 =?
Ans: – 54
(26) (- 9) x 6 + (- 9) x 4 =?
Ans: – 54 + (- 36)
= – 54 – 36
= – 90
(27) 36 ÷ (- 9) =?
Ans: – 4